Glen, here is the link to the 90 car that I had problems with.
http://www.zr1netregistry.com/forum/...ead.php?t=5637
It was a noticeable issue and SSW did take care of it, although the time factor irritated me, mainly being tied up in a car that was done, except for the headers.
If you have any questions give me a shout on Monday when I get back into town.